Plot of the exsitu and insitu conservation scores. Definitions of Conservation Scores
Note: Score values of zero will not appear on the chart.
The table below shows a summary of the occurrence records for the taxon. A record “with coordinates” is one that has a complete set of latitude and longitude values associated with it, which could be used for distribution modeling and the conservation gap analysis. For this analysis, such records with coordinates were confined to those falling within the target native area, i.e. native states/administrative areas within the United States, Canada, and Mexico. In preparation for the conservation gap analyses, we classified each record based on whether it was an existing ex situ sample from a genebank or botanic garden (labeled G, as most records were from genebanks), or a reference observation (labeled H, as most of these records were from herbaria).
The map below shows the predicted presence threshold distribution, the median, the mean, and the standard deviation spatial result from the species distribution model runs. The predicted presence threshold distribution was generated by applied as statistically determined threshold value to the median model distribution. The median, mean, and standard deviation model distributions represent the range of variability across the (10,6, or 3) model runs generated for a given species. Values in the key refer to the probability of occurrence. The occurrences used in the modeling process are represented by dots, distinguishing between G and H records (as available), and the attribute data associated with the points can be viewed by clicking on the dots. The background shows the target native area (i.e. the occupied native country-ecoregion area).
Layers can be added to the map using the toggle buttons on the left side. The first layer turned on will be in the bottom position on the map.
The table below shows the ex situ conservation gap analysis summary. The sampling representativeness score ex situ (SRSex) calculates the ratio of germplasm accessions (G) available in ex situ repositories to reference (H) records for each taxon, making use of all compiled records, regardless of whether they include coordinates. The geographical representativeness score ex situ (GRSex) uses buffers of 50 km radius created around each G collection coordinate point to estimate geographic areas already well collected within the distribution models of each taxon, and then calculates the proportion of the distribution model covered by these buffers. The ecological representativeness score ex situ (ERSex) calculates the proportion of terrestrial ecoregions represented within the G buffered areas out of the total number of ecoregions occupied by the distribution model. A final conservation score for ex situ (FCSex) was derived by calculating the average of the three ex situ conservation metrics. All of the conservation metrics are on a scale from 0-100, with 0 = poor conservation and 100 = comprehensive protection. The FCSex is used to categorize species, with urgent priority (UP) for further conservation action assigned when FCSex < 25, high priority (HP) where 25 ≤ FCSex < 50, medium priority (MP) where 50 ≤ FCSex < 75, and low priority (LP) for taxa whose FCSex ≥75.
The GRSex map shows the potential distribution (threshold map), with previous germplasm collection points surrounded by a 50 km buffer overlaid. Only germplasm (G) points are displayed on the map.
0 = Native area (area of ecoregions within countries where taxon has been observed in the field)
1 = Potential distribution
2 = G buffer (area where ex situ conservation is considered to have been accomplished)
The ERSex The map below shows ecoregions from which no G occurrences have been collected. The ecoregion extent has been clipped to match the predicted potential distribution of the species.
There are many cases where the model extent within a unconserved eco region is small(less than 5 cells). Utilize the “All Ecoregions” layer and the ERSex legend to help locate these areas.
The table below shows all the ecoregions utilized within the study.
The column ERSex Gap Ecoregion denotes if an ecoregion
is within the threshold model but does no have a germplasm record within
50km of it.
The column Ecoregion in Threshold Model Area denotes if
an ecoregion is within the predicted area of the threshold model. Any
ecoregion with a false value for this column contained a valid
occurrence records but does not contain any suitable habitat as defined
by the model.
The table below shows the in situ conservation gap analysis summary. The sampling representativeness score in situ (SRSin) calculates the proportion of all occurrences of a taxon within its predicted distribution that fall within a protected area. The geographical representativeness score in situ (GRSin) compares the area (in km2) of the distribution model located within protected areas versus the total area of the model. The ecological representativeness score in situ (ERSin) calculates the proportion of ecoregions encompassed within the range of the taxon located inside protected areas to the ecoregions encompassed within the total area of the distribution model. A final conservation score for in situ (FCSin) was derived by calculating the average of the three in situ conservation metrics. All of the conservation metrics are on a scale from 0-100, with 0 = poor conservation and 100 = comprehensive protection. The FCSin is used to categorize species, with urgent priority (UP) for further conservation action assigned when FCSin < 25, high priority (HP) where 25 ≤ FCSin < 50, medium priority (MP) where 50 ≤ FCSin < 75, and low priority (LP) for taxa whose FCSin ≥75.
Median models across MaxEnt replicates were evaluated using the area under the receiver operating characteristic curve (AUC), the SD of the AUC across replicates, and the proportion of the potential distribution model with an SD of the replicates >0.15
*Insitu : The sampling representativeness score in situ (SRSin) calculates the proportion of all occurrences of a taxon within its native range that fall within a protected area.
Exsitu : The sampling representativeness score ex situ (SRSex) calculates the ratio of germplasm accessions (G) available in ex situ repositories to reference (H) records for each taxon, making use of all compiled records irrespective of whether they include coordinates.
Insitu : The GRSin compares the area (in km2) of the distribution model located within protected areas versus the total area of the model.
Exsitu : The GRSex uses 50-km-radius buffers created around each G collection coordinate point to estimate geographic areas already well collected within the distribution models of each taxon and then calculates the proportion of the distribution model covered by these buffers.
Insitu : The ERSin calculates the proportion of ecoregions encompassed within the range of the taxon located inside protected areas to the ecoregions encompassed within the total area of the distribution model
Exsitu : The ERSex calculates the proportion of terrestrial ecoregions (25) represented within the G buffered areas out of the total number of ecoregions occupied by the distribution model.
Insitu : The FCSin was derived by calculating the average of the three in situ conservation metrics.
Exsitu : The FCSex was derived by calculating the average of the three ex situ conservation metrics.
FCSc-mean : The FCSc-mean was calculated for each taxon by averaging its final FCSex and FCSin scores. Taxa were then categorized with regard to the two conservation strategies as well as in combination, with UP for further conservation action assigned when FCS <25, HP assigned when 25 ≤ FCS < 50, MP when 50 ≤ FCS < 75, and LP when FCS ≥75.
Observations : The total number of records for the species that were evaluated for used within the study.
Observations with lat/long: The total number of records that had a valid latitude and longitude pair and were used for spatial analysis. Non valid latitude longitude pairs included but is not limited to; points not over land masses and records with only one of the two values present.
Germplasma Records(G) : Observations in which a living sample (via plant or seed) is present in a preservation focused environment (botanical garden, seed bank). These are observations which could protentially produce viable genetic resource information and are therefore evaluated with the suite of exsit focused conservation metrics.
Herbarium Records(H) : Observations that have a supporting herbarium record.
Unique Data Sources: The number of unique data base sources from which observations of the species were gathered.
Geographic representativeness score exsitu :
Select Expected Habitat
Select Buffer Germplasm Collections
The green area outside of the purple is expected habitat that is more then 50km from a germplasm collection. These are potential gaps in the collection of this species.